Okay, to counter-balance all the artsy stuff, I’ll post a sciencey picture.

This is a developing pectoral fin bud of a zebrafish embryo stained with rhodamine phalloidin that binds to actin. In simpler terms, this is a pectoral fin bud in a developing fish embryo that has been stained with a red fluorescent dye that shows the long muscle fibers growing out with the fin bud.